1. Already an amateur boxing champion, he graduated 376th in a class of 391.

2. It is the subject of much study, which now includes my own amateur sleuthing.

3. Images with this much clarity challenge our ideas of what can be achieved with amateur telescopes.

4. He and other amateur astronomers were able to show him our own telescopes, he said.

5. The FAA began a safety campaign last week, reminding amateur operators of the rules.

6. I moved on from receivers to amateur radio operation, so naturally I built my own transmitter.

7. That said, professional and amateur critics alike have voiced some valid concerns.

8. They are the same type of aircraft, often the same models, that amateur fly clubs use on weekends.